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post #1 of 17 (permalink) Old 10-23-2006, 05:22 PM Thread Starter
 
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Need Help! Starting a Dead Bike.

I just got a 93 Vulcan 750 that has been sitting for a year.
Battery was dead so I replaced the battery. The gas tank has some rust in it but not that bad. I could start it by spraying some Startign Fluid directly into the air intake and by having an extra battery (jump cable).

It starts but won't idle and dies down quickly if I don't rev it up.
By revvying it up I can ride it around the blocks but as soon as I stop the engine dies off. Also it pops like a fire cracker while it is running.

There were oil leaks on the bottom and some water on the bottom too.
I had to make sure whether it is oil or water. It was water but I could not trace back to the source. After I clean up the oil/water, I should be able to detect the source of the leak.

I need some pointer to revive this Vulcan to the level I can comfortably drive to work everyday.

Things I am planning to do:
- Check the spark plugs (see the symptoms and replace them)
- Oil Change
- Gas Tank rust removal
- Check the petcock for clogging
- Carburetor cleaning
- Air/Fuel mixture (I need some advice here)
- Carburetor synchronizing (I need some advice here)
- Replacing water coolant
- Brake Fluid change

I need some advice on the steps to make this Vulcan idle properly and not die on me on the road.

Thanks much.

Vulcan Newbie
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post #2 of 17 (permalink) Old 10-23-2006, 05:27 PM
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my vote is carb related!! sounds like your jets are gunked.... try some seafoam... but it sounds like your issue is bad....drain your float bowls. then you may wanna try nursing her off a rich bottle of seafoam, like 1/2 ounce for a 20 ounce bottle....and run that bottle dry. run through the rpm ranges to get all the jets.... if that doesnt work sounds like a carb cleaning.... read the vulcan versus for more info on other things to check...


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post #3 of 17 (permalink) Old 10-23-2006, 05:56 PM
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I would echo the Seafoam trick. I would drain the tank and fill with fresh gas and add about a 3rd of a bottle of seafoam. Start the bike and let it run for a few minutes so you know the bowls are full of gas/seafoam, then let it sit for a day or so and soak your carbs. This alone might solve a big part of the carb problem. If it doesn't, then you might have to have the carbs serviced. The idle circuit can get plugged with varnish and it's mighty hard to clean them without removing the idle mix screws.

Check the bike over for corroded connectors. If the bike has been sitting in any weather, it could be a big problem with corrosion in the wiring.

Good luck!

Fergy
Kyle, TX VN750.com member #707 VROC#19556
2002 VN1500 Classic
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post #4 of 17 (permalink) Old 10-23-2006, 06:25 PM Thread Starter
 
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Since I am still waiting on the manual, I am not familiar with Vulcan carburetor. Do I need to take the whole carburetor off to drain the bowl or I can do it without removing the carb?
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post #5 of 17 (permalink) Old 10-23-2006, 06:38 PM
 
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There is a small hex screw at the bottom of each carb and in front of it is a small nipple where the gas comes out. Get a piece of small tubing to put over the nipple so the fuel does not run on the engine(only a few teaspoons come out of each carb) drain onto paper towels or into a small container.
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post #6 of 17 (permalink) Old 10-23-2006, 07:17 PM
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Hey guys, thought I'd comment on the Seafoam. It truly is a wondrous product. I put some in my car last night, and let my wife drive it to work. The car has 194K miles on it, never cleaned anything related to fuel system, injectors, etc. Well, I took it out this afternoon, and I had no idea what I had been missing! It is so smooth and so happy. Happy, happy, car, car.

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post #7 of 17 (permalink) Old 10-23-2006, 07:25 PM
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Quote:
Originally Posted by cegodsey
Hey guys, thought I'd comment on the Seafoam. It truly is a wondrous product. I put some in my car last night, and let my wife drive it to work. The car has 194K miles on it, never cleaned anything related to fuel system, injectors, etc. Well, I took it out this afternoon, and I had no idea what I had been missing! It is so smooth and so happy. Happy, happy, car, car.
thought i'd give u a heads up.... i used lucas in my jeep (112k miles, just about the same damn thing as seafoam), and i didnt know i had alot of carbon build up. it got it all gone apparently, but it coated my O2 sensors in soot. now i need new O2 sensors, but hey, it runs alot better, well untill the O2 sensors failed.

'04 Vn750
Currently Installed
nat'l cycle deflector shield
westco 12v30 MF, 30A/h w/ 350 CCA's w/ custom box
TOC stator cover w/ Frankenstator mod!
R/R relo

Soon to have (own or on order)
TOC ACCT's
Mez's 110-FRT 170/80-Rear
Custom rear fender and tail light
Givi hard bags w/ custom rear turn signals


Band Engineer/Webmaster for Josey Contreras Tejano Band
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post #8 of 17 (permalink) Old 10-24-2006, 04:25 AM
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Quote:
Originally Posted by Hizzo3
i used lucas in my jeep, but it coated my O2 sensors in soot. now i need new O2 sensors, but hey, it runs alot better, well untill the O2 sensors failed.
I used that in my GMC a month or two ago. Now I suspect that's why I got a 'multiple or random misfire' and some other code that mentioned the OČ sensor.
It's always something !!


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post #9 of 17 (permalink) Old 10-24-2006, 05:41 AM
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My O2 sensor gives me fits when it's cold. It kicks the check engine light on when I start up, then it goes out when I get to the end of the street. I had my wife drive my car yesterday morning and I had forgotten about this - until she was leaving and woke me from a movie dream, all concerned about my high mileage car giving out on her. I thought it was the oil being low at the time - not thinking clearly. By the way, I checked the oil after she got home, and it didn't even register on the dipstick. Hmm, car likes ingesting seafoam, hold the oil.

2000 A16
Drilled baffles
$65 leather saddle bags
Kuryaken grips
relocated R/R
de-badged
25,000+ original owner miles
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post #10 of 17 (permalink) Old 10-24-2006, 06:56 AM
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Quote:
Originally Posted by cegodsey
until she was leaving and woke me from a movie dream
Which movie ?

Ron from Jersey
2005 VN750
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Re-located stator wires
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15,000 Miles July/2012
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